Starting from the classical motion equation of a nondissipative mesoscopic mutual inductance coupled circuit,the squeezing effect of the charge and current in the mesoscopic mutual inductance coupled circuit in the squeezed vacuum state have been investigated.

Quantum effects of the mesoscopic mutual-inductance circuit with pulse-code;

the collision of electrons with lattices, the inductive-coupled electric circuit was quantized when there exists resistance in the coupling part.

Factors that affect the mutual inductance coupling have been studied based on this model, including magnetic core material, position of the primary winding, winding method of the secondary winding and its position.

Because the equivalent parasitic parameters of the capacitance and inductance of the EMI filter may affect EMI performance under highfrequency conditions,the mutual inductance coupling between equivalent parasitic parameters of highfrequency apparatus is used to improve the highfrequency performance of t.

Based on the principle of mutual inductance coupling,this system adopts to the techniques such as DDS and realized the accurate testing of the quality parameters of electronic labels.